Phase separation in incompressible systems

We consider phase separation in multicomponent systems in the limit as the free volume goes to zero. Excluded volume effects are taken into account via a pressure field which implicitly relates currents and forces. The pressure, obtainable from a divergence condition, may give rise to circulating currents. A simple description of the dynamics of phase separation at late times follows. @S1063-651X~97!50504-6#